Pharmacokinetic Analysis of Capsaicin After Topical Administration of a High-Concentration Capsaicin Patch to Patients With Peripheral Neuropathic Pain

Capsaicin, a pungent compound in chili peppers, is a highly selective agonist for the transient receptor potential vanilloid 1 receptor expressed in nociceptive sensory nerves. A high-concentration (640 μg/cm2) capsaicin patch, designated NGX-4010, is in clinical evaluation for the management of peripheral neuropathic pain. To determine systemic capsaicin exposure after single 60- or 90-minute NGX-4010 […]

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